A macro enables you to automate repetitive tasks by ________ the steps that you have taken to accomplish them

As a second example, consider the communication paradigm referred to as queued RPC, as introduced in Rover [Joseph et al. 1997]. Rover is a toolkit to support distributed systems programming in mobile environments where participants in communication may become disconnected for periods of time. The system offers the RPC paradigm and hence calls are directed towards a given server (clearly space-coupled). The calls, though, are routed through an intermediary, a queue at the sending side, and are maintained in the queue until the receiver is available. To what extent is this time-uncoupled? Hint: consider the almost philosophical question of whether a recipient that is temporarily unavailable exists at that point in time.

What will be an ideal response?

An ARP cache temporarily stores which of the following?

a. IP addresses for networking devices recently contacted b. MAC addresses for networking devices to be contacted c. IP addresses for networking devices to be contacted d. MAC addresses for networking devices recently contacted